3002020321 has 4 divisors (see below), whose sum is σ = 3003076144. Its totient is φ = 3000964500.

The previous prime is 3002020313. The next prime is 3002020337. The reversal of 3002020321 is 1230202003.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3002020321 - 2³ = 3002020313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3002020381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 523635 + ... + 529336.

It is an arithmetic number, because the mean of its divisors is an integer number (750769036).

Almost surely, 2^3002020321 is an apocalyptic number.

It is an amenable number.

3002020321 is a deficient number, since it is larger than the sum of its proper divisors (1055823).

3002020321 is a wasteful number, since it uses less digits than its factorization.

3002020321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055822.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 3002020321 is about 54790.6955695947. The cubic root of 3002020321 is about 1442.5732540015.

Adding to 3002020321 its reverse (1230202003), we get a palindrome (4232222324).

The spelling of 3002020321 in words is "three billion, two million, twenty thousand, three hundred twenty-one".